572 results about "Demulsifier" patented technology

The invention belongs to the technical field of sewage treatment, and particularly relates to a demulsifier for eliminating an oil-water interface emulsion layer in oilfield produced liquid treatment and a preparation method of the demulsifier. The preparation method comprises the following steps: adding acrylamide, 1-allyl-3-methylimidazolium bis (trifluoromethanesulfonyl) imine salt, allyl tributyl phosphonium chloride and deionized water into a first reactor, and heating and dissolving the acrylamide, the 1-allyl-3-methylimidazolium bis (trifluoromethanesulfonyl) imine salt, the allyl tributyl phosphonium chloride and the deionized water; adding allyl (diisopropylamino) dimethylsilane, butyl acrylate, deionized water, octylphenol polyoxyethylene ether-10, lauryl sodium sulfate and monopotassium phosphate into the second reactor, and stirring to obtain an emulsion; adding an initiator and sodium hydrogen sulfite into a second reactor, carrying out heating and heat preservation reaction, pouring the mixed solution in the first reactor, and continuously carrying out reaction, heating and heat preservation to obtain a viscous liquid; and drying and granulating the viscous liquid to obtain the demulsifier. The demulsifier provided by the invention has the characteristics of simple synthesis process and high demulsification rate.

The invention relates to the technical field of petrochemical engineering, and particularly discloses a preparation method of a high-sulfur and high-acid crude oil demulsifier, which comprises the following steps: uniformly mixing 40-60 parts by mass of modified polyether, 25-30 parts by mass of zwitterionic surfactant and 10-12 parts by mass of solvent, heating to 50-70 DEG C, reacting for 1-2 hours, and cooling to room temperature to obtain the high-sulfur and high-acid crude oil demulsifier. Adding 3-8 parts by mass of activated aluminum oxide, 8-16 parts by mass of an antacid and 2-4 parts by mass of a corrosion inhibitor, uniformly mixing, adding 0.5-1 part by mass of a defoaming agent, uniformly mixing, cooling, and standing for layering to obtain a demulsifier; the antacid comprises ethanolamine and zinc oxide. The demulsifier prepared by the invention not only has excellent performance in the aspects of dehydration and promotion of oil-water separation, but also can improve the quality of crude oil and reduce the acid value and the sulfur content to a certain extent.

In one aspect, a demulsification additive includes a separation-promoting agent and a solvent. In another aspect, a demulsification additive includes a separation-promoting agent and a demulsifier or demulsifier intermediate. In another aspect, a method for separating crude oil from water includes introducing the water to the cmde oil, providing a demulsification additive that includes a separation-promoting agent, and contacting the water and the crude oil with the demulsification additive. In one embodiment, the separation-promoting agent is selected from the group consisting of dextran sulfate sodium salt, polyvinyl pyrrolidone functionalized with sodium salt of chloroacetic acid, poly(ethyleneglycol)-b(propyleneglycol)-b(ethyleneglycol) block copolymer, polyvinyl pyrrolidone functionalized with propyl sulfonate, sulfonated polyether ether ketone polymer, polyvinyl pyrrolidone functionalized with bromohexane, polyvinyl pyrrolidone functionalized with iodododecane, and combinations thereof.

The invention discloses a low-temperature polyether demulsifier for oil and gas gathering and transportation and a preparation method thereof, and relates to the technical field of petrochemical engineering, and the preparation method is characterized by comprising the following steps: compounding cardanol, pentaethylenehexamine and bisphenol F according to a specific molar ratio to obtain an initiator, and carrying out formaldehyde condensation to prepare a composite initiator; epoxypropane and ethylene oxide are grafted through staged block copolymerization to form a polyether skeleton; introducing a fluorine-containing epoxy monomer to carry out terminal fluorination modification; finally, adipic acid and epichlorohydrin are subjected to chain extension crosslinking, and the demulsifier with the molecular weight being 8000-12000 Da, the fluorine content being 5.5-6.5 wt% and the PDI being smaller than or equal to 1.3 is prepared. The low-temperature demulsifying agent has the effects of realizing efficient demulsification at low temperature, improving the demulsifying efficiency and reducing the dosage through coordination of the composite initiator, super-hydrophobic permeation of the fluorinated block and accurate regulation and control of the molecular weight, solving the problems of low-temperature failure and easiness in emulsification of a traditional demulsifying agent, and meeting the requirements of low-temperature working conditions of oil and gas gathering and transportation.

According to the automatic continuous treatment equipment for the oily sludge, the sludge is automatically pushed to a conveying cylinder through a pretreatment cylinder, the blocky sludge is crushed by the conveying cylinder and is uniformly conveyed to a treatment box, and magnetic pressing plates are sequentially attracted by electromagnetic blocks to press the sludge downwards, so that dynamic pressure is applied to the sludge, and primary dehydration is realized; meanwhile, demulsification balls are contained in dewatering balls released by the feeding box and penetrate into the sludge under the action of an electromagnetic block, demulsifying agents are released, the oil-water interfacial tension is reduced, an electric heating element is arranged in a spiral transmission rod, water evaporation is promoted through microwave heating, the dewatering balls are matched, and the oily sludge can be effectively dewatered, and magnetic balls move directionally under the action of an electromagnetic field; and the oil-water recycling tank realizes fine separation of oil and water through a filter screen membrane, and a deodorization box of the sludge collection tank synchronously triggers gas circulation for deodorization by utilizing linkage of an elastic air bag and an auxiliary air bag when the dewatering balls are recycled.

The invention belongs to the technical field of emulsified oil recovery, and particularly relates to a method for recovering emulsified oil generated by preparing an alumina carrier through an oil column forming process. The emulsified oil recovery method comprises the following steps: adding ammonia water into emulsified oil, stirring, preserving heat, centrifuging, collecting upper-layer floating oil A, and removing bottom-layer water and impurities to obtain a first-stage emulsion; adding ammonia water into the primary emulsion, heating by using a heat source until the temperature is higher than 100 DEG C, then stopping heating to obtain a demulsified primary emulsion system, carrying out centrifugal treatment, collecting upper-layer floating oil B, removing bottom-layer water and impurities, and remaining a secondary emulsion; combining the collected upper-layer floating oil A and the collected upper-layer floating oil B, distilling and removing water to obtain an oil body A; carrying out vacuum distillation on the secondary emulsion to remove water, and centrifuging to remove impurities at the bottom layer to obtain an oil body B; and finally, combining the oil body A and the oil body B to obtain recovered oil. The method does not need to add organic auxiliaries such as a demulsifier, the recovery process is simple and easy to control, the treatment temperature is low, the recovered oil quality is good, and the recovery rate is high.

The invention belongs to the technical field of oilfield auxiliaries, and particularly relates to an oil-soluble demulsifier for a heavy oil field and a preparation method of the oil-soluble demulsifier. The oil-soluble demulsifier for the heavy oil field, provided by the invention, is prepared from a block polymer emulsion, nonylphenol polyoxyethylene ether, modified nanoparticles and a cross-linking agent. According to the invention, methoxystyrene, dodecyl vinyl ether, N, N-dimethylaminopropyl acrylamide and 2-acrylamide-2-methylpropanesulfonic acid are adopted to prepare a quaternary block comb-shaped polymer, the quaternary block comb-shaped polymer and nonylphenol polyoxyethylene ether are subjected to molecular-level cross-linking through a cross-linking agent, nano modified particles are added, and the quaternary block comb-shaped polymer is prepared. The prepared demulsifier can be rapidly adsorbed on an oil-water interface and respectively adsorb an oil phase and a water phase, so that the tension of the oil-water interface is reduced, rapid separation of the oil phase and the water phase is realized, and the demulsification performance is improved.

The invention discloses a preparation method of a demulsifier for oil-water separation of full fermentation broth, and relates to the technical field of demulsifier preparation.The preparation method comprises the steps of magnetic nanoparticle preparation, nanoparticle coating and demulsifier preparation.The preparation method has the advantages that salt is dissolved in a three-neck flask, nitrogen is introduced to discharge oxygen in the solution, and the demulsifier is obtained; according to the preparation method, the magnetic nanoparticles are added into the mixture A, so that the generated nanoparticles can be prevented from being oxidized, the mixture A is added in the process of adding the potassium nitrate and the 2-methylimidazole, and the polydopamine in the mixture A has good adhesion and biocompatibility, so that a'bridge '-like connection effect can be achieved between the magnetic nanoparticles and a subsequently generated nanoparticle coated sample; and polyvinylpyrrolidone can be used as a dispersant to prevent agglomeration of generated nano particle coated sample particles, and polar groups on molecular chains of polyvinylpyrrolidone can generate certain interaction with raw materials in a reaction system to optimize the growth process of the nano particle coated sample.

The invention discloses a macromolecular demulsifier as well as a preparation method and application thereof, and belongs to the technical field of oil exploitation. The polymer demulsifier has a structure as shown in a formula (I): # imgabs0 # formula (I); wherein R is selected from any one of NH2-(CH2CH2NH) m-CH2CH2, and m represents an integer from 1 to 4; n represents an integer from 25 to 600; a represents an integer from 60 to 200; and b represents an integer of 40-150. The macromolecular demulsifier has a good demulsification effect, improves the water phase cleanliness of demulsified dehydrated water, is suitable for various working conditions and environments, and solves the problem of difficulty in treatment of crude oil produced in oil fields in the prior art.

A computer implemented method that enables artificial intelligence based demulsifier control for AC or modulated AC / DC electrostatic coalescers is described. The method includes monitoring parameters associated with the GOSP facility and inputting the parameters to a trained machine learning model that outputs a minimum HPPT separation efficiency. The method includes determining a target HPPT separation efficiency based on the minimum HPPT separation efficiency. Additionally, the method includes adjusting a demulsifier dosage being injected into the HPPT apparatus to separate dry oil at the target HPPT separation efficiency.

The invention relates to the field of demulsifiers, in particular to an oil sludge demulsifier as well as a preparation method and application thereof. The oil sludge demulsifier comprises the following components in parts by mass: 20-35 parts of a surface active compound, 7-12 parts of a sodium alkyl sulfate cosolvent, 0.6-1.8 parts of a stabilizer and 48-55 parts of water, wherein the surface active compound comprises hyperbranched polyamidoamine and polyether amine modified magnetic nanoparticles. According to the oil sludge demulsifier, the problems that most of existing demulsifiers are small in dehydration amount, low in dehydration speed, poor in demulsification effect and low in treated oil content are solved, the demulsification performance of the oil sludge demulsifier is improved, the demulsification and dehydration efficiency is improved, and effective separation of oil sludge is achieved.

The invention provides an automatic chemical adding optimization control method, device and system and a readable storage medium, and the automatic chemical adding optimization control method comprises an online water content analyzer which is arranged in an outlet pipeline of a settling tank and is used for detecting the water content of incoming liquid of raw oil in real time; the automatic medicament filling unit is connected with the on-line water content analyzer, is positioned on a medicament adding pipeline of the settling tank and is used for filling medicaments; the data acquisition processing and data transmission unit is connected with the automatic medicament filling unit and is used for acquiring and transmitting interference data; and the control unit is respectively connected with the online water content analyzer, the automatic medicament filling unit and the data acquisition processing and data transmission unit, and the control unit is used for controlling the automatic medicament filling unit to fill medicaments through the fuzzy-proportional integral-Smith compensation controller according to the water content of the incoming liquid and the interference data. By means of the technical scheme, the demulsifier can be added more evenly and timely, the demulsifier is saved, and the crude oil dehydration effect is improved.

The invention relates to the technical field of water treatment, and discloses a silicon powder conditioner and a preparation method thereof, the silicon powder conditioner comprises 20-40% of an inorganic coagulant, 5-15% of an organic polymer coagulant, 3-10% of a natural polymer coagulant aid, 10-25% of a demulsifier, 2-8% of a synthetic coagulant aid, and the balance of water. The demulsifying agent is compounded with various coagulants and coagulant aids, the demulsifying agent preferentially destroys an oil-water interfacial film, releases wrapped silicon powder and eliminates the'colloid protection 'effect of oil stains on the surface of the silicon powder, and the inorganic and organic coagulants rapidly perform electrical neutralization and adsorption bridging on exposed silicon powder particles to form floc which is good in settling performance and easy to filter. Meanwhile, the inorganic coagulant provides positive charges and efficiently neutralizes the microfine silicon powder with negative charges; cPAM with high molecular weight and PDADMAC with strong cations form long-chain bridging and patching effects, so that fine particles with the particle size of 1-5 microns are specially captured, and meanwhile, larger-particle silicon powder is improved to form floc which is easy to filter; the natural polymer further increases the volume and density of the floc, and prevents the floc from being broken under shearing.

The invention provides an integrated medical waste liquid advanced treatment device which comprises a treatment tank body, a separation cylinder and an interception filter plate at the lower end are arranged in the treatment tank body, the top of the separation cylinder is connected with a water inlet pipe, a rotating shaft driven by a first motor is arranged in the middle of the separation cylinder, and a spiral net plate is arranged on the shaft. An assembly for adding a demulsifier through a rotating shaft is arranged at the bottom of the tank, and an ultraviolet ozone co-processing assembly is arranged above the interception filter plate. A biological carrier column is contained in the reaction cylinder, a uniform water distributor is arranged at the bottom, and a top sealing cover is connected with a water outlet pipe through a connecting pipe. And the aeration water delivery assembly delivers the water treated by the ultraviolet ozone to the water distributor, so that the multi-stage advanced treatment of the waste liquid is realized. Through efficient multi-stage treatment technologies such as solid-liquid separation, demulsification, ultraviolet ozone oxidation and biodegradation, comprehensive purification of complex medical waste liquid is achieved, and the device has the advantages of being high in treatment efficiency, high in automation degree and remarkable in environmental protection effect.

The invention provides a cyclodextrin ionic liquid demulsifier and a preparation method thereof. The demulsifier takes cyclodextrin as a core, and the surface of the demulsifier is grafted with tertiary amine with long-chain alkane through chloroacetyl chloride. The preparation method comprises the following steps: S1, modifying cyclodextrin with chloroacetyl chloride to obtain chloroacetyl chloride modified cyclodextrin; and S2, grafting chloroacetyl chloride modified cyclodextrin by using tertiary amine with long-chain alkane to obtain the cyclodextrin ionic liquid demulsifying agent. The demulsifier has the characteristics of low amount, high efficiency, easiness in degradation, salt resistance, acid resistance, alkali resistance and the like, and has a good demulsification effect on oil-containing wastewater and high oil removal rate.

The invention discloses a demulsifier for a heavy oil field and a preparation method of the demulsifier. The preparation method comprises the following steps: reacting an amine compound with benzyl glycidyl ether and allyl glycidyl ether to obtain a multi-aromatic-ring initiator, then polymerizing the multi-aromatic-ring initiator with epoxypropane and ethylene oxide to form a demulsifier polyether, and carrying out crosslinking modification to obtain a multi-aromatic-ring demulsification component A; synthesizing oleylamine polyether, and modifying to generate a dispersing aid component B which contains oil carboxyl and is of a comb-like structure; the demulsifier for the heavy oil field is prepared from the component A and the component B according to the ratio of 6: (1-2). The demulsifier for the heavy oil field prepared by the preparation method has the advantages of low dosing concentration, good dehydration effect, neat dehydration interface and clear dehydrated water.

The invention relates to a composite ceramic substrate with a core-shell structure and a preparation method thereof, and the preparation method comprises the following steps: carrying out ball milling, drying and high-temperature molten salt reaction on a metal oxide, TiO2, absolute ethyl alcohol and NaCl-KCl molten salt to synthesize titanate precursor powder; washing the titanate precursor powder, and adding deionized water to obtain a titanate aqueous solution; the preparation method comprises the following steps: uniformly mixing a surfactant, a cosurfactant, an oil phase and a titanate aqueous solution to obtain a first microemulsion; ammonia water is dripped into the first microemulsion, and a second microemulsion is obtained; adding isopropyl alcohol salt into the second microemulsion to obtain core-shell structure powder; demulsifying the core-shell structure powder with a demulsifier, drying and calcining, and ball-milling with zirconium balls, a solvent, a defoaming agent and a dispersing agent to obtain slurry; and degumming and sintering the slurry green body to prepare the ceramic substrate with the core-shell structure. The core-shell structure multiphase ceramic substrate prepared by the invention has the advantages of low dielectric loss, high breakdown strength and low sintering temperature.

The present application belongs to the technical field of hydrogen engine, and particularly relates to an emulsified machine oil demulsification device and method for hydrogen engine, which can be used for solving the problem of emulsified machine oil of hydrogen engine in cold start or low temperature environment. The device comprises a vortex tube system, an emulsified machine oil heating system, an oil-gas separation system and a double-oil tank interaction system. The vortex tube system is communicated with the engine exhaust pipe to deliver exhaust heat to the emulsified machine oil heating system, and phase change material is used to realize constant temperature heating of the emulsified machine oil. Under the joint action of constant high temperature and demulsifier, efficient demulsification of the emulsified machine oil is realized. At the same time, the cold gas output by the vortex tube system is beneficial to the liquefaction and discharge of the separated water vapor. The double-oil tank interaction system can separate the emulsified machine oil and non-emulsified oil, so that the machine oil passing through the hydrogen engine oil pump is non-emulsified oil, and the normal lubrication of the hydrogen engine is ensured. The energy of the whole system comes from the engine exhaust energy, without additional energy, which conforms to the idea of energy saving and emission reduction.

The invention belongs to the technical field of hydraulic oil preparation, and particularly relates to anti-wear hydraulic oil and a production process thereof. The anti-wear hydraulic oil is prepared from the following raw materials in percentage by mass: 2 to 2.2 percent of an anti-wear complexing agent, 0.002 to 0.003 percent of a demulsifying agent, 0.001 to 0.0015 percent of an anti-foaming agent, 0.03 to 0.04 percent of an anti-rust agent, 0.1 to 0.3 percent of a pour point depressant, 0.3 to 0.5 percent of a dispersing agent and the balance of base oil. According to the anti-wear hydraulic oil disclosed by the invention, a mixture of 500N II type base oil, 100N III type base oil, CTL 4 base oil and trimethylolpropane trioleate is used as base oil, and an anti-wear complexing agent, a demulsifier, an anti-foaming agent, an anti-rust agent, a pour point depressant and a dispersing agent are added into the base oil; the prepared anti-wear hydraulic oil is ensured to have excellent extreme pressure property, thermal oxidation stability and wear resistance.

A hyperbranched polymer and a preparation method therefor and the use thereof. The hyperbranched polymer comprises a structural formula of formula 1, wherein R is selected from a substituted or unsubstituted C12-C18 alkyl. The hyperbranched polymer, which is used as a demulsifier for demulsifying crude oil emulsions, exhibits a high demulsification efficiency, a low usage amount, a low demulsification temperature, a high acid and alkali resistance, and a high salt resistance. The demulsifier has a high demulsification performance in oil-water emulsions with various properties.

The invention discloses an emulsion wastewater treatment system, and relates to the technical field of wastewater treatment. A water inlet device is fixedly mounted on the wastewater tank; a demulsification agent box and a flocculation agent box are arranged on two sides of the wastewater tank; a stirring rod is rotationally mounted in the wastewater tank and is in sliding connection with a first bevel gear; the first bevel gear is meshed with a second bevel gear; the second bevel gear is fixedly provided with an output shaft of a first motor, the output shaft of the first motor is fixedly provided with a cam, the protruding face of the cam makes contact with a limiting disc, and the limiting disc is fixedly installed on the stirring rod. The first motor drives the stirring rod to rotate and move up and down, so that uniform stirring of wastewater at different heights in the wastewater tank is realized, and the stirring efficiency and the wastewater treatment effect are improved; the rubbing mechanism is arranged, so that the cleaning circular ring rubs up and down along the inner wall of the wastewater tank, chemical residues are removed, and the emulsion wastewater treatment efficiency is improved.

The invention discloses a ternary block copolymerization low-temperature demulsifier, a preparation method and an application in oil-water separation, polyether and anhydride are dissolved in a solvent to obtain a mixed solution, and the mixed solution is subjected to a reaction at 70-90 DEG C for 1-3 h to obtain a polyether anhydride solution; the preparation method comprises the following steps: adding epoxy chloropropane, dimethylamine, polyethyleneimine and an end-capping reagent into a polyether anhydride solution, and reacting at 90-100 DEG C for 4-5 hours to obtain a binary block copolymerization demulsifier; and adding polysiloxane into the binary block copolymerization demulsifier, and reacting at 110-140 DEG C for 4-5 hours to obtain the ternary block copolymerization low-temperature demulsifier. When 50 ppm of the demulsifier is added at 40 DEG C, the demulsifier can quickly demulsify a high polymer heavy oil-water system and remove water. The demulsifier disclosed by the invention is simple in synthesis step and mild in condition, has a potential application prospect and is expected to be applied to large-scale production of oil fields.

Disclosed in the present invention are an ionic liquid demulsifier and a preparation method therefor and a use thereof. The ionic liquid demulsifier of the present invention has a structure as shown in formula I, wherein in formula (I), m=1-16, n=3-5, and i=1-16. The ionic liquid demulsifier has excellent interfacial activity and can quickly migrate to an oil-water interface to reduce the tension of the oil-water interface, so as to destroy an interface film composed of asphaltenes, and promote occurrence of a demulsification process. The ionic liquid demulsifier provided by the present invention has the characteristics of simple synthesis steps, small dosage, good acid-base tolerance, low demulsification temperature, high demulsification efficiency and the like, and can be used for demulsifying crude oil emulsions.

The invention relates to a preparation method of a low-temperature crude oil demulsifier, which comprises the following specific steps: preparing block polyether by using propane diamine as an initiator and using epoxypropane and ethylene oxide as main agents, then grafting by using an organic silicon chain, and modifying by using isocyanate. The invention also relates to a low-temperature crude oil demulsifier. Compared with the prior art, the invention has the following beneficial effects: according to the technical scheme, isocyanate is used for modifying the whole block polyether molecular chain, the demulsification effect of the demulsifier can be obviously improved, and meanwhile, after organic silicon and isocyanate are used for modification, the application temperature of the demulsifier is positively influenced; the low-temperature crude oil demulsifier prepared by adopting the preparation method disclosed by the invention is high in demulsification speed and good in demulsification effect under a normal-temperature condition and can be applied to scenes with high temperature rise difficulty, high demulsification speed requirement and high demulsification performance requirement, and the adopted raw materials are low in price, simple in synthesis method and convenient for large-scale popularization.

The invention provides a lubricating oil composition, a preparation method and application thereof and water turbine lubricating oil, and belongs to the technical field of lubricating oil. The lubricating oil composition comprises the following components in parts by weight: 82-99 parts of ester base oil; 0.5 to 5 parts of a phenol type or amine type antioxidant; 0.01 to 5 parts of an antirust agent; 0.01 to 9 parts of an anti-wear reagent at extreme pressure; 0.01 to 5 parts of a metal deactivator; 0.01 to 5 parts of a demulsifying agent; and 0.01 to 5 parts of an anti-foaming agent. The lubricating oil composition has the characteristics of biodegradability and excellent oxidation stability; meanwhile, the lubricating oil also has good extreme pressure wear resistance, low-temperature performance and demulsifying performance.

The invention belongs to the technical field of wastewater treatment, and particularly relates to an electroplating pretreatment wastewater treatment process which comprises the following steps: step 1, storing floating oil in an oil collection area by using an oil removal tank, and continuously increasing the content of the floating oil on the liquid level of the oil collection area; 2, unemulsified floating oil in the oil collecting area is extracted; 3, pumping out the wastewater containing emulsified oil in the oil removal tank, and carrying out demulsification treatment; step 4, adding a pH regulator into the demulsified wastewater to reduce the pH value of the wastewater to 6-8; 5, stirring and separating after adding a flocculating agent to obtain a treating fluid; and step 6, filtering the treatment liquid to obtain standard water, collecting unemulsified floating oil, and demulsifying the waste liquid containing emulsified oil to reduce the use amount of a demulsifier and a flocculant.

The invention relates to the technical field of environmental engineering, and discloses a wool washing wastewater recovery treatment process which comprises the following steps: S1, carrying out demulsification pretreatment on wastewater through bionic nano-enzyme and recovering wool fat, S2, carrying out supercritical water gasification reaction on the pretreated wastewater, synchronously decomposing organic matters and generating hydrogen, the method comprises the following steps: S1, gasifying effluent, S2, carrying out gasification on the effluent, S3, carrying out filtration and biodegradation on the gasified effluent by adopting a self-energy-supply dynamic membrane bioreactor, S4, carrying out deep purification on membrane effluent through a photocatalysis-microalgae coupling system, and S5, coordinating operation of the whole system through an intelligent control algorithm based on real-time monitoring data. According to the method disclosed by the invention, the technical effects of efficiently recovering the wool fat and improving the oil-water separation selectivity are achieved by adopting a technical scheme of synergistically enriching and demulsifying the magnetic response bionic nano-enzyme and the high-gradient magnetic field; the problems of high reaction residue, serious secondary pollution and easy enzyme inactivation are solved.

The invention relates to the technical field of industrial wastewater treatment, and discloses a treatment method for grinding fluid wastewater of a grinder, which comprises the following steps: pretreatment and demulsification, multi-stage chemical purification, biochemical deep treatment, deep purification and recycling, and sludge treatment. A specific supported heterogeneous catalyst is adopted in the multi-stage chemical purification step, nano zero-valent iron and copper oxide composite active components constructed on the surface of the catalyst can enhance the generation efficiency and stability of free radicals in the advanced oxidation process, and a composite coagulant with an optimized ratio in the coagulating sedimentation step is cooperated, so that the purification efficiency of the high-grade oxidation process is improved. An efficient continuous removal system for heavy metal ions and refractory organic pollutants is formed; meanwhile, in the pretreatment step, the demulsifier is composed of specific components, through the synergistic effect of all the components, rapid demulsification of the emulsified oil phase in the grinding fluid wastewater is achieved, favorable conditions are created for subsequent deep treatment, and therefore the purification efficiency and operation stability of the technology are overall improved.

The utility model discloses quality detection equipment for demulsifier production, which comprises a lantern ring, the inner side of the lantern ring is movably connected with a reaction vessel, a first motor is turned on to drive a screw rod to rotate, a slide block and a lifting arm on one side of the slide block are matched with a scaleplate of the scaleplate to descend to the height that a stirring blade is immersed into a solution in the lantern ring, and the reaction vessel is connected with the reaction vessel. Turning on a second motor to drive stirring blades to stir the solution through rotation of a rotating shaft, observing the state of the solution to judge the use effect of the demulsifier, finally performing reverse operation, lifting a lifting arm to the position where the stirring blades are separated from the inner side of the reaction vessel, taking out the reaction vessel, and treating the tested solution in the reaction vessel. According to the device, the situation that a mixed solution needs to be manually stirred by personnel can be effectively avoided, physical exhaustion of the personnel is reduced, after detection is finished, an external cable is connected with a wiring terminal, an electric heating piece is heated, the residual solution in a reaction vessel is dried in an auxiliary mode, the drying efficiency is improved, and the risk of bacterium breeding is reduced.

The invention relates to the technical field of demulsifiers, and discloses a crude oil demulsifier and a preparation method thereof.The preparation method comprises the steps that polyethylene glycol monomethyl ether and ethylenediamine-N, N '-diacetic acid react to obtain an intermediate; and then reacting with 4-chloromethyl benzoic acid (methoxypolyethylene glycol) ester to obtain the crude oil demulsifier. The surfactant contains a plurality of benzene ring structures and hydrophilic quaternary ammonium salt groups, has strong oil-water amphipathy, and shows lower surface tension and oil-water interfacial tension. The demulsifier has quaternary ammonium salt active groups and a plurality of polyether chain segments, forms a unique star-shaped structure, shows very high demulsification performance and dehydration rate, and contains a plurality of high-temperature-resistant benzene ring structures, so that the heat resistance and structural stability of the demulsifier are improved.